“promotion of a monetized YouTube channel”
All youtube videos have commercials.
That’s not what he’s talking about and you know it
Yes YouTube channels have commercials the more those commercials are played the more money the YouTube creators make, so someone constantly posting links from that channel on other sites is pushing people to watch the channel and helping the owner make more money
Basically you are promoting a YouTube channel for profit is what he’s accusing you of doing
And yet some YouTube channels "monetize" the channels' "creators" and pay something to them via revenues from ad placement by YouTube.
As many have seen over the last years, YouTube has "demonetized" some channels and some creators. But then, it is likely you knew that, such that your reply was old-fashioned debate obfuscation.